Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 55 users online :: 5 registered, 0 hidden and 50 guests


Most users ever online was 155 on Mon Aug 15, 2016 1:40 am

Registered users: Bing [Bot], Google [Bot], Gussmoore, MSNbot Media, Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

fan

Post questions and info about combustion (flammable vapor) powered cannons here. This includes discussion about fuels, ratios, ignition systems, safety, and anything else relevant.
Sponsored 
  • Author
    Message

fan

Unread postAuthor: sebastian » Tue Oct 14, 2008 9:00 pm

I am making my first combustion cannon and I was looking for some pointers.

for example what is the purpose of a fan in the combustion chamber how far in do i put it and which direction should it blow? :roll:
  • 0


sebastian
Private
Private
 
Posts: 1
Joined: Tue Oct 14, 2008 8:51 pm
Reputation: 0

Unread postAuthor: SEAKING9006 » Tue Oct 14, 2008 9:07 pm

Try here.
  • 0

Completed projects:
CA1 SMSS Basic Inline
CA3 PDAB Airburst Cannon

Current Project: Bolt action rifle (25x140mm + 1in shot)

SEAKING9006
Colonel
Colonel
 
Posts: 734
Joined: Mon Jun 23, 2008 3:20 pm
Location: Texas
Reputation: 0

Unread postAuthor: starman » Tue Oct 14, 2008 9:31 pm

The purpose of the fan is to vigorously mix the fuel air mixture before and during the shot and to assist ventilating spent gases after the shot. It makes a noticable difference in performance. The fan is typically mounted at the rear of the chamber and close to an air inlet. It sucks from that inlet and blows down the chamber and out the breech or barrel.

Use brushless fans only, typical of those used for computer case ventilation.

Here's a shot of the typical setup, breech view:
Image

Outside rear view:
Image

Also take a good long read at Latke's site...defacto standard resource for advanced combustion design.
  • 0

User avatar
starman
Donating Moderator
Donating Moderator
 
Posts: 3041
Joined: Wed Dec 12, 2007 12:45 am
Location: Simpsonville, SC
Reputation: 0

Return to Combustion Cannon Discussion

Who is online

Registered users: Bing [Bot], Google [Bot], Gussmoore, MSNbot Media, Yahoo [Bot]

Reputation System ©'